Tri-State Generation and Transmission Association (Colorado, wholesale to cooperatives), High Impact Load Tariff
Large-load tariff for data centers: what is on file, the terms the filings state, and where each fact comes from. Terms a filing does not state are marked, never guessed.
StatusApproved Last reviewed 2026-10-14
Applies atLoad additions above 45 MW, either at the request or forecast within 4 years
What the filing saysFERC-APPROVED (Aug 14, 2026, per Tri-State), subject to a compliance filing. FERC Docket ER26-1929 (revised tariff filed March 26, 2026; an earlier version was rejected in ER25-3316). Applies to member cooperatives' large loads: a security payment, a minimum term, minimum monthly demand and energy charges, and rules for bringing your own resources. The Data Center Coalition objected on FERC jurisdiction. The specific percentages and years were not read. If a site is in a Tri-State member cooperative's territory, the HILT governs the wholesale side and the member sets retail terms.
Stated terms
This tariff does not yet have terms we can tabulate. The status text above is what the filings and our source state. See the source below.
Source
Tri-State news release on the FERC approval; Utility Dive and APPA coverage (search summaries). FERC order not read.
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Screening information from public filings, not legal or investment advice. Tariffs change; confirm the current terms with the utility and the commission before relying on them.